Internal-combustion engine.



G. R. ELLIOTT. I INTERNAL ooMEUsTIoN ENGINE.

APPLICATION FILED AUG 23, 1911. 1,043,81 6, Patented Nov. 12, 1912.

2 SHEETS-SHEET 1.

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G. R. ELLIOTT.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED AUG. 23, 1911.

Patented Nov. 12, 1912.

2 SHEETS-SHBET 2.

Figi# Fig /Vfnesses; n Infima/Z515 12155@ l 2k/7?, GL-zbeffREmoilbustion Engines,

UNITED sTATEs PATENT oEEIoE GILBERT E. ELLIOTT, or -EosTon, MnssAcHUsETTs.

INTERNAL-connusrron ENGINE.

Specication of Letters Patent. Patented N 0V. 12, 1912.-

Appl'icatlon led August 23, 1911. Serial No. 645,582.

To all whom 'it may concern:

Be it known that I, GILBERT R. ELLIOTT, a subject of the King of Great Britain, and a resident of the clty of Boston, in the county of Suffolk and Commonwealth of Massachusetts, have invented cert-ain new and useful Improvements in Internal-Comof which the following is a specication.

The object of this invention is the construction of a rota valve for internal combustion engines, w ich shall be capable of adjustment, both automatic and controlled, for taking up wear; which shall give quick wide-open and close of the valve-ports, and

shall embody other improvements in details of construction hereinafter set forth. i

'ln the drawings forming part of .thls

specification, Figure 1 is a sectional plan' view on the broken line V-V in Fig. '2, showing the main parts of a four-cylinder explosion engine embodying my improve- -3 communicating ments. Fi 2 is a sectional view of the same on the broien line X-X in Fig. 1. Fig. 3 is a sectional detail view on a larger scale showing the method of causing the four ex- -pansible port cylinders to rotate as one. Fig. 4 is a view 'of the same showin thel exterior of the adjacent ends of two o said cylinders. Fig. 5 is an end view o f one of said cylinders, a part being broken away.

Referring to the drawings, the numeral 1 designates the engine cylinders of usual type, preferably cast as one and integral with two cylindrical valve-casings 2 one at each side of the row of cylinders, as shown in Figs. l and 2. Through the upper Wall of each valve casing are four elongated ports with the cylinders l, as shown in Fig. 2, the width of the same being illustrated in Fig. l; and through the outer lateral wall of each casing are ports 4 of equal length as the ports 3. The ports 4 of each' casing open into an 'elongated chamber 5, one of which is adapted to communicate with the hydrocarbon supply-pipe 6, and the other with a suitable exhaust 7.

Within each casing 2 are four port cylinders or shells 10 each formed with a port 11 equal in length to said ports 3, 4, and designed by their rotation toopen and close the last named ports. These port 'cylinders are made to t snugly. within the casings 2 by making said cylinders slightly eccentric wit-hin, as shown in Fig. 5, and giving each a longitudinal slit 12 through its thinnest section; the

lso that said nuts cylinders Abeing of a slightly larger normal diameter than the casings so that they have to A--be sprung together for insertion. As shown in Figs. 2 and 5, the ports l1 are twice as wide as the lports 3, and are bisected by the slit 12 in each instance.

For the rotation ofthe port cylinders 10, la shaft 13 is run centrally within each valve casing, and connected by means of sprockets and chain 14, 15 to rot-ate synchronously; while power is communicated to one of said shafts by sprockets andchain 16, 17 and 18 from the engine shaft 19.- Near the ends of said shafts are collars 20, 21, the collars 20 being fixed thereon, while the collars 21 are keyed thereon but adapted to be moved along the shafts for a limited distance.- said collars' bout each said shaft between are three annuli 22, as shown in Figs. 1 and 3. The lateral lfaces of theseV annuli and of said collars are formed with a bevel 23, as are also the ends of the port cylinders 10. When, now, theA movable.4 collars 21 are forced. inward, said bevels will coact to expand the split port cylinders, Aand so to vsnugly fit the casings 2 whenever said parts become worn and non-fitting.

To compel the port cylinders to rotate with the shafts, each of said cylinders and the collars 20, 21 are formed with notches 24 adapted to receive the blocks'25, as shown in Figs. 3 and,4,.and 1, each annulus being suitably recessed to permit thep'assage `of a block. vThese blocks and notches form in eiiect a clutch by which all said parts must turn together, while still permitting longitudinal adjustments thereof.' f

To cause the wear of the ort cylinders and casings to be automatical y taken up, a spring 26 is located between each slidable c'ollar 21 and its adjusting nut 27 (Fig. 1), being set up until said springs are materially compressed, sutlicient force will be exerted thereby to maintain the expansion of the cylinders during a considerable range of .Wea-r. l

As shown in Fig. 1, at the side disclosing the ports 3, the ports 11 are disposed quartering with respect-one to the next so as to `present `themselves at the proper intervals for a four4 cylinder, four cycle engine. v

To enable the valve parts to be removed for repairs, cleansing and-the like, and then returned in proper manner,` as well as to lenable' them to be accurately positionedl each collar 20 is formed-with an originally,

position.

indentation or hole 30 arran ed 4to be in line with a hole 31 in the casing when the ports of the port cylinders are correctly posit'ioned relative to the casing ports; and the holes 31 are in radial alinement with the indentations 30 and the piston nearest the sprocket'l, for instance, is in its lowermost Then when said parts are being put together, what is first to be done is to turn the shaft 19 until said piston is in said position, then loosen the nuts 32' and turn the valve directly connected therewith until its said indentation and hole are in register. The boltsF 32 of the sprocket gear 14 are next loosened and the other valve revolved until its said indentation and hole are in register. Said bolts or nuts being then tightened up, the pins or other tools, which are preferably employed for determining such registering, are removed, and the engine is ready forfuse. If desired said holes 31 may be normally filled by plugs or screws. Such angular adjustment is permitted by having said gears rotative on their shafts and having them held by means of b0lts32' passing through slots-33, to the collars 34 fixed on the shaft-s.

It should be noted that the intake to an engine cylinder, as well as the exhaust therefrom, must pass through two ports 11 to reach the casing ports; in doing lthis it moves lengthwise of the' port cylinders 10, the members 22 being made annular to permit the same.

For the lubrication of the valve parts, the casings 2 are each formed with a channel 35, as shown in Fig. 2,\in the lower point thereof, and preferably extending nearly the whole length thereof. These channels being filled with lubricant, enough thereof is communicated to the cylinders 1() .and annuli 22 to reduce wear to a minimum.

It is evident that this engine and its lindrical valve' casing having a port communicating with each of said cylinders, and a cylindrical shell having ports corresponding with said engine ports, said shell having but a single port coacting with the port of each cylinder, said shell having means for its rotation and being so disposed that the means 'of communication with any one cyl-- inder will be through the latters port, the coacting port of said shell, thence axially along the latter and through the port of said shell associated with one of the other cylinders out to the exhaust.

2. An internal combustion engine comprising a plurality of engine cylinders, a

cylindrical valve casing havlng a port com- -of cylindrical valve casings having ports communicating with the engine cylinders, split cylindrical shells fitted to said casings, said shells having their ends beveled and the shells being also formed with ports, and means, adapted to be pressed into enga ement with said beveled ends and to theriy forcibly expand the shells.

4. The combination with the cylinders of a multi-cylinder internal combustion engine, of cylindrical valve casings having ports communicating with the engine cylinders, split cylindrical shells fitted to said casings, said shells having their ends beveled and the shells being also formed with ports, terminally conical members adapted to engage said beveled ends, the member at one end of each valve being held against axial displacement relative to the adjacent shell, and a spring adapted for pressing inward the member at the opposite end of each valve.

. 5. The combination with the cylinders of a multi-cylinder internal combustion engine, of cylindrical valve casings having ports communicating with the engine cylinders, synchronously rotated cylindrical shells fitted to each casing, each shell having its ends beveled and itself longitudinally split, annuli beveled to fit the ends of said shells, one annulus being between each two adjacent shells, and means for pressing shells toward each other, each shell having a port therein.

6. The combination with the cylinders of a multi-cylinder internal combustion engine, of cylindrical valve casings having ports communicating with the engine cylinders, a shaft in each casing, means for rotating said shafts, a fixed collar on each shaft, an adjustable collar on each shaft, cylindrical shells vtted within said casings, each shell being slit to render it expansible and having a port, and annuli located in said casing between the ends of the said shells, said shells, annuli and collars being beveled.

7. The combination with the cylinders of a multi-cylinder internal combustion engine, of cylindrical valve casings having ports communicating with the engine cylinthence longitudinally along the shell to anders, a chamber beside each casing having other port thereof. 10 ports tothe latter, an intake pipe to one In testimony-that I claim the foregoing of said chambers and an exhaust to the invention, I have hereunto set my hand.

i other, and cylindrical rotary shells having GILBERT R. ELLIOTT. ports tted Within said casings, said ports be- Witnesses: f 111g disposed to cause the gas to pass through A. B. UPHAM,

any one of the ports of the sald shell' and ALEX. I; PECKHAM. 

